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Two expressions. Two expressions. Two expressions. Two expressions.
1+18 and 20-1
the answer is a(n) equationequationWhen two expressions are equivalent they can form an equation.
A statement that equates two equivalent expressions is called an Identity.
fg
Two expressions. Two expressions. Two expressions. Two expressions.
You can use them to find a variable. Lets say you have two equivalent expressions with the same variable... x + 2x - 42 = 0 2x - 28 = 0 If you combine these equivalent expressions you ahve... x + 2x - 42 = 2x - 28 In all of the expressions you have x = 7 There are also other applications but its confusing to explain.
Most expressions.
In many cases you can simplify an algebraic expression. You don't really "solve" them; an equation can be solved. An equation is a declaration that two expressions are equal, for example, x + 3 = 10.
1+18 and 20-1
when a symbol such as <or> is placed between two expressions
When two expressions are equal they can form an equation.
when a symbol such as <or> is placed between two expressions
4x2y8 is an expression, not an equation. Expressions cannot have solutions.
Equations are statements that state two expressions are equal, while inequalities are statements that state two expressions are not equal, meaning one is greater or less than the other. The graph of the solution set of an equation is a line or a curve, while the graph of the solution set of an inequality is a region at one side of the boundary line or curve obtained by supposing that the inequality was an equation.
the answer is a(n) equationequationWhen two expressions are equivalent they can form an equation.